Paint knowledge | types of waterborne wood paint and solutions to common problems in construction

Core tip: water-based coating is the coating with water as diluent Water based paint includes water-soluble paint, water dilution paint and water dispersive paint (emulsion paint) The production process of waterborne wood paint is a simple physical mixing process Water based wood paint is the safest and most environmentally friendly paint for furniture at present, which uses water as solvent without any harmful volatilization However, due to the comprehensive factors such as coating effect and coating process, the market share of waterborne furniture paint in China is still very low, but the concept of low-carbon and environmental protection is the direction of future furniture paint development I believe that with the continuous progress of technology, the application of waterborne furniture paint will be more and more extensive water Application scope and advantages of roller ceramic coating Recommended introduction: the surface of ceramic rubber plate used for roller ceramic coating is cast into durable rubber plate by hundreds of independent small ceramic pieces Each ceramic piece has raised characteristics Under general conveyor belt pressure, thousands of unique cast bumps can produce positive traction, prevent slipping and extend the service life of conveyor belt roller At the same time, the bottom layer adopts high-quality rubber, which has strong elasticity and can play a good impact resistance role The scope of application of roller ceramic coating is one three six 83857180 (the same as V) 1 Roller coating in extremely harsh working environment 2 The belt joint is not suitable for fixing with iron buckle; 3 It is suitable for leather Home of coatings: water-based coatings are coatings with water as diluent Water based paint includes water-soluble paint, water dilution paint and water dispersive paint (emulsion paint) The production process of waterborne wood paint is a simple physical mixing process Water based wood paint is the safest and most environmentally friendly paint for furniture at present, which uses water as solvent without any harmful volatilization However, due to the comprehensive factors such as coating effect and coating process, the market share of waterborne furniture paint in China is still very low, but the concept of low-carbon and environmental protection is the direction of future furniture paint development I believe that with the continuous progress of technology, the application of waterborne furniture paint will be more and more extensive The difference between water-based wood paint and oil-based wood paint the oil paint has higher hardness and fullness, but the water paint has better environmental protection Generally, the oil paint uses organic solvent, usually called "Tianna water" or "banana water", which is polluted and can be burned It can be seen that there are essential differences between water-based paint and oil-based paint in environmental protection and health Waterborne wood paint is the product with the highest technical difficulty and technological content in wood paint With the enhancement of people's awareness of environmental protection, waterborne wood paint is more and more popular in the market because of its advantages of non-toxic, non odor, little volatile matter, high safety, non yellowing and large painting area Although there are many brands of waterborne wood paint in the current market, according to the different main components, it can be divided into the following four categories: 1 The water-based wood paint with acrylic acid as the main component is characterized by good adhesion and will not deepen the color of wood, but poor wear resistance and chemical resistance, soft film hardness, Hb pencil rule test, poor fullness, general performance, easy to produce defects in construction Because of its low cost and low technical content, it is the main product of most waterborne paint enterprises to the market This is also the reason why most people think the water-based paint is not good Its advantage is low price 2 The water-based wood paint, which is mainly composed of the synthesis of propylene and polyurethane, not only inherits the characteristics of acrylic paint, but also increases the characteristics of wear resistance and chemical resistance Some enterprises are marked as water-based polyester paint The hardness of the film is better, the pencil rule is 1H, the fullness is better, and the comprehensive performance is close to the oil paint At present, only a few domestic enterprises can produce 3 Polyurethane water-based paint, with superior comprehensive performance and high fullness, the hardness of paint film can reach 1.5-2h, and its wear resistance even exceeds that of oil-based paint It has obvious advantages in service life and color distribution, and is a high-grade product in water-based paint 4 For pseudo water-based paint, curing agent or chemicals should be added when using, such as "hardener", "film enhancer", "special dilution water", etc some of them can also be diluted with water, but the solvent content is very high, which is more harmful to human body, some of them even exceed the toxicity of oil-based paint, and some enterprises are labeled as water-based polyester paint It's easy for consumers to tell Common problems and solutions to wrinkle of paint film some constructors adopt one-time thick coating when using water-based wood paint for flat coating The result is excellent in fullness, but wrinkle appears on the surface of paint film The reason for the problem is that under the high temperature, the surface layer of the thick water-based paint film dries rapidly to form a film while the thick inner layer dries slowly During the drying process, the flow of the paint produces a tension difference, resulting in the uneven surface of the final film, that is, wrinkle Therefore, during the construction, do not apply thick coating once, especially do not use the method of direct pouring, and still use thin coating to ensure that the coating is evenly dry and film-forming, so as to achieve the smooth effect of the film The adhesion of paint film is poor, the temperature is high in summer, and the humidity is high in some areas After the construction of general water-based wood paint, it will be found that the adhesion between coating layers is not firm, resulting in poor adhesion, and the layers are peeled off from each other, or even can be torn off as a whole piece of peel The direct cause of poor adhesion between layers is that there is no grinding between layers during the construction of painters In order to catch up with the time, the painter did not polish in the next process, but directly applied on the previous paint film In addition, due to the high temperature, the time needed for the interface between wet paint film and dry paint film to form a firm layer was insufficient, which affected the adhesion Therefore, the construction personnel are required to fully polish each layer during construction in high temperature weather to improve the adhesion At the same time, the construction should be arranged in the morning and evening to ensure the internal quality of the product This phenomenon is also common in summer construction In the process of construction, the paint coating is too thick, which leads to the fast drying of the surface layer and the slow drying of the thick inner layer, which directly causes the cracking of the primer and other phenomena At the same time, we should also pay attention to the quality of the plate It is recommended to choose the plate with good stability The whiteness of the paint layer is mainly caused by the high humidity of the construction environment and the thick film during the construction Because of the high temperature in summer, the air humidity in some areas is relatively high The surface drying time of the paint layer accelerates with the increase of temperature, but the actual drying time is relatively slow; the painter may ignore the actual drying time in the construction process, and immediately apply another paint after the surface drying of the paint layer As a result, the bottom paint layer is not fully dry In rainy or humid weather, it is easy to produce the phenomenon of white paint layer Home of coatings is specialized in coatings, diatom mud, paint coating, coating technology, fire retardant coating news and coating, diatom mud, paint coating, coating technology, fire retardant coating decoration knowledge and decoration renderings,